Personally I'd look into processing that file system with an image backup.
A way to look at that would be "Which can you count to faster, 2,000,000
or 1 ?"
Depending on the data, 250 GB would compress down to 83 GB (if we assume
3/1 client compression) and if the client & server processors are newer
models running TSM 5.2 code, I would expect that to be processed in about 4
hours and if it doesn't compress at all, about 3 time that or 12 hours.
(both backups and restores with a single process)
All that depends heavily on the hardware but P630's with just 2 CPU's would
probably produce such results.
(and you are doing the backup and restore of the file system from the
actual host that it physically resides on, correct?)
Since creating an image backup requires a static environment for the
duration of the backup, you could always look into cutting BCV's, mounting
those up to an alternate processor and letting that alternate processor
create the image backup... then the re-sync of the BCV's to get you ready
for the next backup cycle wouldn't take very much time.
Dwight E. Cook
Systems Management Integration Professional, Advanced
Integrated Storage Management
TSM Administration
(918) 835-3106 (local Tulsa OK)
(877) 625-4186
T/L 349-4361
Ralf Behrendt
<Ralf.Behrendt@WG
Z-BANK.DE> To
Sent by: "ADSM: ADSM-L AT VM.MARIST DOT EDU
Dist Stor cc
Manager"
<[email protected] Subject
.EDU> Restore from 250 GB of 2 000 000
files in 1 day
11/10/2004 02:31
AM
Please respond to
"ADSM: Dist Stor
Manager"
Hallo,
is its possible to restore 250 GB ( two million files) within a day?
Its an NSF mounted filesystem. Can parallel restore increase the throughput
by an NSF-mouted filesystem.
The filesystem is mounted from a EMC cellera and symmetrix.
The backup time was with 13 hours with parallel sessons.
Then the data will be migrated the LTO1 tapes in an IBM 3584.
Has any one experience with restore off many little files with high
throughput.
best regards
Ralf Behrendt
mailto:ralf.behrendt AT wgz-bank DOT de
Ueber das Internet versandte E-mails koennen leicht verfaelscht oder unter
fremdem Namen erstellt werden. Demzufolge muessen wir zu Ihrer und unserer
Sicherheit die rechtliche Verbindlichkeit der vorstehenden Erklaerungen
ausschließen. Der Versand von E-mail dient somit ausschließlich dem
Informationsaustausch.
Due to the fact that E-mails are prone to manipulation and can be
misleading as to the identity of the sender, the foregoing statements and
comments shall have no legal validity. This is for your own protection as
well as ours. Thus, E-mails shall be sent for information purposes only.
|
